On Sat, Apr 11, 2026 at 09:32:04AM +0800, Jiayuan Chen wrote:
> 2. Remove the CONFIG_BPF_SYSCALL guard around struct bpf_tcp_req_attrs.
> This struct is referenced by bpf_sk_assign_tcp_reqsk() in
> net/core/filter.c which is compiled unconditionally, so wrapping
> the definition in a config guard could cause build failures when
> CONFIG_BPF_SYSCALL=n.
A typo and CONFIG_BPF is removed instead?
but the reason is probably not because of a build error.
> diff --git a/include/net/tcp.h b/include/net/tcp.h
> index 6156d1d068e1..570a8836c2ba 100644
> --- a/include/net/tcp.h
> +++ b/include/net/tcp.h
> @@ -598,7 +598,6 @@ struct request_sock *cookie_tcp_reqsk_alloc(const struct
> request_sock_ops *ops,
> struct tcp_options_received
> *tcp_opt,
> int mss, u32 tsoff);
>
> -#if IS_ENABLED(CONFIG_BPF)
> struct bpf_tcp_req_attrs {
> u32 rcv_tsval;
> u32 rcv_tsecr;
> @@ -612,7 +611,6 @@ struct bpf_tcp_req_attrs {
> u8 usec_ts_ok;
> u8 reserved[3];
> };
> -#endif
